JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III RENEWABLE ENERGY SOURCES Previous Question Paper (November/December - 2017 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
Explain why solar Energy is Clean and Green energy?
Answer
Solar energy is considered clean and green because it produces electricity without emitting greenhouse gases, pollutants, or toxic waste during operation. It utilizes an inexhaustible natural resource, thereby reducing dependence on fossil fuels and mitigating climate change.
Define Solar Constant.
Answer
The solar constant is defined as the amount of solar energy received per unit time, per unit area, on a theoretical surface perpendicular to the sun's rays at the mean earth-sun distance outside the earth's atmosphere. Its standard value is approximately 1367 W/m².
Differentiate between sensible and latent heat.
Answer
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How many classifications are there in Solar Ponds?
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Write the formula for calculating Output Power in kWh from a HAWT.
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Define Biogas and give examples.
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What is the main advantage of Geo Thermal Energy?
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Write the principle of OTEC.
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State Peltier Effect.
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Write the components of a PEMFC.
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Part B
How you can measure solar radiation? What is the principle behind that? Give a neat sketch of an instrument which is helpful in measuring Solar Radiation.
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Write a short note on Environmental impact of Solar Energy.
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Write about why Solar Energy is the most viable option in India. Justify your answer in Economics point of view.
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Differentiate between solar flat plate collectors and concentrating collectors.
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How a solar concentrating collector can be useful in producing Power?
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Mention few applications of solar energy.
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What is the principle behind Solar Pond? Explain each layer of solar pond with neat sketch.
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With a neat diagram explain the working of a Vertical Axis Wind Turbine with its advantages over Horizontal Axis Wind Turbine.
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How a bio digester can be a powerful tool for rural India in uplifting their economical strength.
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What are the site selection criteria requirements for setting up of an OTEC plant?
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What are the different types of OTEC plants? What is the efficiency difference between each type of OTEC plants?
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What is Tide? How Tides are formed? How you can harness tidal energy? Explain any one tidal energy generator with neat sketch.
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What is the need for direct energy conversion?
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Explain about the carnot cycle.
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Write a short note on Polymer Electrolyte Membrane Fuel Cell.
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State Faraday’s Laws.
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Give at least three different types of fuel cell with their operating temperatures.
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